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Hydrogen molecule valence bond potential energy

The valence bond approach uses the wavefunctions of the valence electrons of two approaching atoms to calculate the potential energy of the system as a function of the interatomic distance (Figure 11.21). This method was first applied to the hydrogen molecule by Walter Heitler (b. 1904) and Fritz London (1900-1954) in 1927, and subsequent refinements to the calculations have produced remarkably good values for the bond energy and the bond length. [Pg.183]

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